TM 10-8415-208-12NOTEThe hand-written flow gauge value may differ from tester to tester(4) Read flow gauge (1). The reading on flow gauge (1) should match the hand-written value on thereverse side of flow calibration chart (8) located on the inside front cover of the regulator tester(5) Close flow valve (4)(6) Turn the regulator tester off by depressing on/off switch (7)(7) If flow gauge (1) reading was more than 10% higher than the value specified on the reverse side offlow calibration chart (8), the regulator tester should be repaired only by trained and certifiedmaintenance personnel prior to use. If flow gauge (1) reading was lower than the specified value,continue to step ee.Check the regulator tester for leaks as follows:(1) Push rubber stopper (9) into inlet connection (6)(2) Ensure flow valve (4) is closed by turning it clockwise(3) Turn the regulator tester on by depressing on/off switch(4) Slowly open flow valve (4) until pressure gauge (2) reading is -5 inches of water(5) Close flow valve (4)(6) Turn the regulator tester off by depressing on/off switch (7)(7) Pressure gauge (2) reading should not rise above -2 inches of water in the 10 seconds interval afterturning the regulator tester off(8) If pressure gauge (2) reading does rise above -2 inches of water in 10 seconds, the regulator tester hasexcessive leaks and should be repaired only by trained and certified maintenance personnel prior touse(9) Remove rubber stopper (9) from inlet connection (6).WARNINGIgnition hazard. Do not use oxygen or test oxygen regulators or equipment with the portable regulatortester. Oxygen could be ignited by the regulator tester motor causing personnel injury or death.f.Ensure an air cylinder charged from 1,000 to 2,475 PSIG is installed on the EBA. Refer to paragraph 3-9.2.3, steps b.(1) through b.(6), to install the cylinder.3-67